431441513 has 2 divisors, whose sum is σ = 431441514. Its totient is φ = 431441512.

The previous prime is 431441509. The next prime is 431441537. The reversal of 431441513 is 315144134.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381499024 + 49942489 = 19532^2 + 7067^2 .

It is a cyclic number.

It is not a de Polignac number, because 431441513 - 2² = 431441509 is a prime.

It is a super-2 number, since 2×431441513² = 372283558279458338, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (431441503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215720756 + 215720757.

It is an arithmetic number, because the mean of its divisors is an integer number (215720757).

Almost surely, 2^431441513 is an apocalyptic number.

It is an amenable number.

431441513 is a deficient number, since it is larger than the sum of its proper divisors (1).

431441513 is an equidigital number, since it uses as much as digits as its factorization.

431441513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 431441513 is about 20771.1702366525. The cubic root of 431441513 is about 755.6267257842.

Adding to 431441513 its reverse (315144134), we get a palindrome (746585647).

The spelling of 431441513 in words is "four hundred thirty-one million, four hundred forty-one thousand, five hundred thirteen".